Fujifilm Acros 100 Film Emulation on iPhone

Acros 100 is black and white refined to its purest form. Where Tri-X shouts, Acros whispers. Its ultra-fine grain and impossibly smooth tonal transitions produce images that feel like they belong in a gallery — quiet, considered, and technically immaculate. REGRADE brings this elegant B&W rendering to your iPhone through AI that converts color sensor data with the same tonal delicacy that made Acros a fine-art standard.

What makes Acros 100 distinctive

Fujifilm Neopan Acros 100 was the last black and white film Fuji manufactured before discontinuing it — and its loss was mourned loudly enough that Fuji brought it back as Acros II. Its reputation rests on three qualities: grain so fine it almost disappears, tonal transitions so smooth they feel continuous rather than stepped, and a highlight rendering so controlled that even backlit scenes maintain detail in the brightest areas. It is the anti-Tri-X — not gritty, not rough, not journalistic. It is contemplative.

• Ultra-fine grain that is virtually invisible — among the finest of any B&W stock
• Exceptionally smooth tonal transitions from deep shadow to bright highlight
• Superb highlight handling — bright areas retain detail and texture
• Slightly lower contrast than Tri-X, creating a more nuanced tonal palette
• Excellent reciprocity failure characteristics for long exposures
• Clean, elegant aesthetic that suits fine-art and architectural subjects

Best for

Acros 100 belongs in environments where stillness and precision matter. Fine art photography, architectural studies, minimalist compositions, and long-exposure work all benefit from its refined character. Landscape photographers use it when they want black and white that feels spacious rather than dramatic. Portrait photographers reach for it when the subject calls for elegance over edge. It is not a street film — it is a gallery film.

• Fine art photography and gallery prints
• Architecture and minimalist compositions
• Landscape and nature photography
• Long exposure photography — waterfalls, clouds, cityscapes
• Elegant portraits in controlled or soft lighting

How REGRADE emulates Acros 100

Most B&W conversion tools treat all black and white film as the same thing: desaturate, add contrast, sprinkle grain. But Acros 100 and Tri-X 400 produce fundamentally different images from the same scene because their emulsions respond to the color spectrum differently. Acros has a particularly nuanced response to red and blue light that creates separation in scenes where other B&W stocks would produce flat, muddy tones.

REGRADE captures flat, unprocessed sensor data by disabling Apple's Deep Fusion pipeline, retaining the full color information that the AI needs to perform a spectrally accurate conversion. The regrading engine maps each color channel through Acros 100's sensitivity profile, producing tonal separations that are smooth and dimensional. Grain is applied at a density so low it reads as texture rather than noise, and the contrast curve is gentler than Tri-X — more S-curve than hockey stick. The result is black and white that breathes: spacious highlights, rich but never crushed shadows, and a midtone smoothness that digital B&W conversions rarely achieve.